Using Table 1, calculate the mean annual meltwater runoff from the Jakobshavn Isbræ glacier from 2017 to 2023. Give your answer to one decimal place.
Table 1: Annual meltwater runoff from Jakobshavn Isbræ
| Year | Meltwater runoff (km3\text{km}^3km3) |
|---|---|
| 2017 | 32.3 |
| 2018 | 36.8 |
| 2019 | 39.4 |
| 2020 | 34.1 |
| 2021 | 42.5 |
| 2022 | 41.2 |
| 2023 | 43.9 |